Question

(pKa1(H2P) =
2.950,pKa2(H2P) = 5.408)

Calculate the pH at each of the following volumes of 0.20 M
NaOHadded to 20.00 mL of 0.20 M KHP. (Hint: Please note that
KHP isthe intermediate form of phthalic acid, a diprotic acid! It
cannotbe treated like a typical weak acid.)